package com.sky.mapper;

import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;

import java.util.List;

public interface ShoppingCartMapper {
    //查询购物车（条件用户id、商品id [+口味]）需要使用动态sql
    List<ShoppingCart> listBy(ShoppingCart shoppingCart);

    //根据购物车id修改数量
    @Update("update shopping_cart set number = #{number} where id = #{id}" )
    void update(ShoppingCart cart);

    //添加购物车
    @Insert("insert into shopping_cart (name, user_id, dish_id, setmeal_id, dish_flavor, number, amount, image, create_time) " +
            " values (#{name},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{number},#{amount},#{image},#{createTime})")
    void insert(ShoppingCart shoppingCart);

    //根据用户id查询购物车
    @Select("select * from shopping_cart where user_id = #{userId}")
    List<ShoppingCart> getByUserId(Long userId);

    //根据用户id清空购物车
    @Delete("delete from shopping_cart where user_id = #{userId}")
    void deleteByUserId(Long userId);

    /**
     * 根据id删除购物车数据
     * @param id
     */
    @Delete("delete from shopping_cart where id = #{id}")
    void deleteById(Long id);
}
